已知函数
.
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6670ba224f4fc3a03b23db0b9acd85ac.png)
(2)若
,
,当
时,存在最大值和最小值,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae81f60ba1180b6def7a8dddf57efd6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6670ba224f4fc3a03b23db0b9acd85ac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff926a5a58e120e18ac9343aa5504e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dccb03e8bcf048dfa4bbd8ca0246d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
19-20高三下·浙江·阶段练习 查看更多[1]
(已下线)浙江省超级全能生2020届高三下学期3月联考数学试题(B卷)
更新时间:2020-08-17 07:48:03
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
在区间
上的最大值为3.
(1)求常数m的值;
(2)在△ABC中,若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ef71756ef8bfae1442a859d0a60392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
(1)求常数m的值;
(2)在△ABC中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec308173689e84d09070ad1367ac6ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1d6201ae8b341fe7c2e578429dddcb.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数
.
(1)求函数
的增区间;
(2)方程
在
上有且只有一个解,求实数m的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dc58c3df4680b04ac80da3b3e0a1a8.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】在①
,②
,③
这三个条件中任选一个,补充在下面的横线上,并加以解答.
已知△ABC的内角A,B,C所对的边分别是a,b,c,若____________.
(1)求角B;
(2)若
,求△ABC周长的最小值,并求出此时△ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f1d5b50db0b87df7a8907a4e0699b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df2aa5ec7101c7dd355f0cab6f4fe31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70162c05e236f881578f2c6e9507b6b4.png)
已知△ABC的内角A,B,C所对的边分别是a,b,c,若____________.
(1)求角B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be4380bdcef1c542604a6ad61642c0f.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】如图,在
中,已知
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/23e106db-e851-487c-aea6-61ad943cb88e.png?resizew=119)
(1)求AD的长;
(2)若
,点E,C在直线AD同侧,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d2109e1b5f8157eeae14b0022878b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5d9391552147f0b0c2dac2ec79ebed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/23e106db-e851-487c-aea6-61ad943cb88e.png?resizew=119)
(1)求AD的长;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c5e7ab5a46dd74168a6555fd6bf6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50337fad727f63b856a2cb342cd230c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cfda5a702b4667cf789a826677a1e20.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)求
的最小值;
(2)在
中,
,且
,若
,求角B的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0ddf18ed204be2b6abfbc7a7477822.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b947bdd294b65e6dc3519cfbed8d5ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10d243584988cafa7e80ac9c9da0d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319b03d0f9025108d5bbd4b4aad7bbb7.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】知道在直角三角形中,一个锐角的大小与两条边长的比值相互唯一确定,因此边长与角的大小之间可以相互转化.与之类似,可以在等腰三角形中建立边角之间的联系,我们定义:等腰三角形中底边与腰的比叫做顶角的正对
.如图,在
中,
.顶角
的正对记作
,这时
.容易知道一个角的大小与这个角的正对值也是相互唯一确定的.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/5b08a58e-a870-4476-94b0-748fead6aa54.png?resizew=112)
根据上述对角的正对定义,解下列问题:
(1)
的值为( )
A.
B.
C.
D.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(2)对于
,
的正对值
的取值范围是______.
(3)已知
,其中
为锐角,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab3e912f74f80b0878f90c88d42af80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf41b94bb22f385601fa21c3cf435470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea36188262b6bbf9098ba084b1d66bc8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/5b08a58e-a870-4476-94b0-748fead6aa54.png?resizew=112)
根据上述对角的正对定义,解下列问题:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d9d97b81f939119268d8006bedac0a.png)
A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(2)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a54e7d6e547a5d4850edc4025eeacc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73738e78a4d8e6df0129113ada99f4fc.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4777985fe308c220d5827aae7b93f4c.png)
您最近一年使用:0次